Analysis

  • max time kernel
    142s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 00:05

General

  • Target

    RFQ-2251.exe

  • Size

    467KB

  • MD5

    a8426b5bad6bc128155701a777d03900

  • SHA1

    c6257f2c917ccd2a45bb81440114ff63292eff91

  • SHA256

    4bebecd4e0286af21b88e3b1d71b34f9567e8c21e99bb0145ad718a0d7353b11

  • SHA512

    24b41a75180b4f1cf8a49d47c74a4e13b772ca15d27e3b4d1a5e83b8b8b8f29f0203f8c26c813725cb78d76c8db0cf0c80e8623217646f98c58a027c00ae6224

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.itdone.cz
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    viObavejMa

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • AgentTesla Payload 6 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RFQ-2251.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ-2251.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1904
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TjcWKQrdfU" /XML "C:\Users\Admin\AppData\Local\Temp\tmp985A.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1652
    • C:\Users\Admin\AppData\Local\Temp\RFQ-2251.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:956

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp985A.tmp

    Filesize

    1KB

    MD5

    e8450faccd6c348c7e6190c6e3bf217d

    SHA1

    018cc8451595df13fbe11748726004ba3311b54a

    SHA256

    0d8d7316e0b3a42f7f19a81848ab9a5067da15ebb467985ec0a8ee6d0c221848

    SHA512

    58a632d9ae218fcbc18ec7389e5583409231c97187f87ac28ff9e0388e2e7be1b76d5628acaf1bf382dca160162da9aa654c98615599047a08f83a1f32be92c0

  • memory/956-64-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/956-60-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/956-61-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/956-63-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/956-65-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/956-66-0x0000000000445FDE-mapping.dmp

  • memory/956-68-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/956-70-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/1652-58-0x0000000000000000-mapping.dmp

  • memory/1904-56-0x0000000000AB0000-0x0000000000B02000-memory.dmp

    Filesize

    328KB

  • memory/1904-57-0x0000000074F91000-0x0000000074F93000-memory.dmp

    Filesize

    8KB

  • memory/1904-55-0x0000000000250000-0x0000000000258000-memory.dmp

    Filesize

    32KB

  • memory/1904-54-0x00000000010C0000-0x000000000113C000-memory.dmp

    Filesize

    496KB